body {
    margin: 0;
    padding: 20px 0;
    font-family: Arial, sans-serif;
    background-color: #f5f5f5;
    min-height: 100vh;
    display: flex;
    flex-direction: column;
    align-items: center;
}

.title {
    text-align: center;
    color: #333;
    margin-bottom: 20px;
}

.footer {
    margin-top: 20px;
    text-align: center;
    color: #666;
    font-size: 14px;
}

.chat-container {
    width: 80%;
    max-width: 800px;
    height: 90vh;
    background-color: white;
    border-radius: 8px;
    box-shadow: 0 2px 10px rgba(0, 0, 0, 0.1);
    display: flex;
    flex-direction: column;
}

.input-area {
    padding: 20px;
    border-bottom: 1px solid #eee;
    display: flex;
    gap: 10px;
}

textarea {
    flex: 1;
    padding: 10px;
    border: 1px solid #ddd;
    border-radius: 4px;
    resize: none;
    min-height: 80px;
    font-size: 16px;
}

button {
    padding: 10px 20px;
    background-color: #007bff;
    color: white;
    border: none;
    border-radius: 4px;
    cursor: pointer;
    font-size: 16px;
}

button:disabled {
    background-color: #ccc;
    cursor: not-allowed;
}

.response-area {
    flex: 1;
    padding: 20px;
    overflow-y: auto;
    line-height: 1.6;
}

.item {
    margin-bottom: 20px;
    padding: 15px;
    border: 1px solid #eee;
    border-radius: 4px;
    background-color: #f9f9f9;
}

.item div {
    margin: 5px 0;
}